Fluid control means



p 1943. E. c. BRISBANE ET AL 2,339,468

FLUID CONTROL MEANS Filed May 16, 1941 in 22m lSnventor E.- C. BRISBANE AND E. E. HILKER Patented Sept. 28, 1943 FLUID ooNTnoL vr slingerie Brisbaneand EarlHillier, York, Pa.,

assignors to S. Morgan Smith Qornpany, York,

Pa., a corporation of Pennsylvania:

Application May 16, IS iL'Scrial 393,718

Zola a s. (01. 251-121 This invention relates to fluid control means.

An object of the invention is to provide an improved fluid control means adapted to be installed in a conduit or passage in such manner that the flow of fluid in one direction through the passage isrestricted a predetermined amount and the flow of fluid through the passage in the reverse direction is unrestricted.

Another object of the invention is to provide an improved fluid control means of the above type in which a cage containing a ball valve is mounted in a casing having passages formed therein in overlapped spaced relation with a connecting passage arranged in vertical alinement to the cage so that the ball valve is supported in spaced relation to the upper end of the connecting passage for controlling the flow of fluid I therethrough.

The invention also comprises certainnew and useful improvements in the construction, ar-

rangement and combination of the several parts of which it is composed, as will be hereinafter more fully described and claimed.

In the accompanying drawing the single figure is a vertical longitudinal section of a fluid pressure control means embodying the present invention. Referring to the drawing, the improved fluid control means comprises a casing 22, adapted to be connected to a fitting 23 having a port I8 formed therein.

Within the casing 22 is a chamber 24 adapted to be supplied with flu d under pressure from a suitable source of supply (not shown).

Also formed in the casing 22 is a chamber 25 Y which is adapted to be connected to a sewer or other free discharge (not shown).

The chamber 26 is arranged withinthe casing 22 in spaced relat on to the pressure chamberzt, and also formed with n the casing and located between the chambers 24 and 26, is a chamber 25.

Chamber 29 is connected to the pressure chamber 24 by a port 32. and also connected to the exhaust chamber 26 by a port 33.

Communication through ports 32 and 33 is controlled by valves 36 and 31, respectively. The valves 35 and 3'! are adapted to be operated as a unit in any Well known manner. The valve 35 has its head disposed within the chamber 2 2-, said valve being adapted to engage a seat M. The valve 3'! has its head disposed Within the chamber 2%, said valev being adapted to engage a seat 42. The valves 36 and 31 are so arranged that when the valve 35 is seated the valve 31 is unseated, and vice versa.

The chamber 29 is connectedto' the port It, by a passage comprising three sections, indicated on the drawing bythe reference numorals 56,5! and 53. v

The section 51 of the passage is contracted somewhat. That is to say, the area of the sections .55 and 58 of the passage is greater than the area of the section 51, the latter providing a reduced portion in thepassage between the sections 56 and 58. p I The passage 5'? at the point where saidpassage is connected to the passagett may-'be' formed withia'tapered wall 59.: p v I In the form of the invention herein shown and described. the passages 5t and .58 are arranged substantially in parallel horizontal planes, with the-passagett disposed'in a plane slightly lower than the plane of the passage 58. The end of the passage 56.,farthest fromwthe chamber 29 overlies the end of. the passage 58' farthest from the port l8, and the passage 51 is'vertically dis posed and connects the overlapped ends of the passages 56 and 58. I I v In axial al nernent with the verticalpassage 57,

the casing 22 is formed. with a threaded opening 60. I

Mounted in the opening 6%! and supported by the threaded portion thereof, is a cage 6| comprising a cylindrical member open at the top and openat the bottom. The upper portion downwardly within the cage. The downward movement of the ball is l m tedwhen the. ball rests against the portion 63 of the arms 62.

The upper portion of the cage BI is adapted to receive a suitable tool, such as a spanner wrench,

in order to turn said cage to the desired position Within the cas ng 22.

In order to lock the cage 8| in adjusted position, a lock nut 65 is mounted on the upper threaded portion of the cage, said nut being adapted to be turned down tight against the upper surface of the casing 22 when the cage 6! is disposed in the adapted to provide means for limiting the up-' ward movement of the ball 65. The cap nut 66 provides means for closing the upper portion of the cage 6|. If for any reason the ball 34 should require inspection or cleaning, the cap nut 66 can be unscrewed without affecting the setting of the cage 6 l thereby exposing the ball for ready inspection or replacement.

When the device is inactive ball waive member 6 2 will be in the lowermost position, which position of said ball is such that the ball is spaced slightly from the seat or tapered wall 59.

Since the valve 3? is unseated, port 18 is connected to the sewer or free discharge, through passages 58, 51, past the .imseated ball 64', passage 56, chamber 29, port 33 and chamber 25.

When the valves 36, 31 are moved upwardly, valve 31 is seated and valve 36 is unseated. When the valve 31 is thus seated and the valve 36 is unseated, the pressure supply chamber 24 is connected to port 18, through port 32, past unseated valve 36, chamber and passages 56,, 5,1

and 58.

Due to the manner in which the ball valve member 64 is arranged in passage 55, when the fluid under pressure is supplied to port 1.8 from chamber 23, in the manner above described, the downward, pressure .of- [the fluid passing from passage 5.6, through passage 5'! to passage 58, will retain the ball valve member 64in the bottom of the cage 5i. Therefore, since the ball 64 is retained. by the cage Si in slightly spaced relation to the tapered wall or seat 59., the fluid, under pressure supplied to port 1'8 is restricted in its flow f m passage 58 to p ssage 58 to the area of the opening between the ball 6 and the tapered wall '59. In this way the amount of fluid under pressure which is delivered to port 18 is limited tothe amount of fluid that can pass through therestricted opening provided between the ball Stand the tapered'wall 59.

On the other hand, when the valves 36, 31 are operated so as to seat valve 35 and unseat valve 31, so that fluid is exhausted from the port 18,

the flow .of fluid upwardly through the passage 51, from passage 58 towards passage 56, forces the ,ball 64 upwardly away from the tapered wall 59. With the ball 54 thus moved to a position away firom the upper. end of thepassage 51, fluid can flow unrestrictedly through the passages 51 and 56 towards the sewer or free discharge chamber 25.

Having thus described our invention, what we claim is:

l. Fluid control means comprising a casing formed with a passage, a valve. seat formed in the passage, a threaded bore formed in the casing and arranged in axial alinement with said valve seat, a cage open at both end :v and having a portion formed with external? screw threads for threaded engagement with thehthreads of said bore, the threaded portion of said cage projecting above the upper surface of'said casing, said cage having a plurality of depending arms extending downwardly in said bore towards said valve seat, the lower ends of said arms having inwardly extending portions adapted to be disposed in spaced relation above said valve seat, a ball valve member mounted within said cage and adapted to be supported by the lower inwardly extending portions of said arms in spaced relation with respect to said valve seat, said ball being freely movable within said cage, a lock nut mounted on the upper threaded exteriorly disposed portion of said cage and adapted to be turned down tightly against the upper surface of said casing to retain the cage in adjusted position within said bore, and a cap nut threadedly mounted on the upper portion of said cage above the lock nut, said cap nut constituting means for closing the upper open end of said cage and being adapted to be unscrewed from said cage to expose the ball for inspection or replacement without affecting the position of the cage within the bore of the casing.

2. A valve of the class described, comprising a casinghaving two passages formed therein, one said passage extending from an end of the casing inwardly to a point interiorly :of the casing, the other said passage extending irom the other end of the casing inwardly to a point interiorly of the casing, the inner end portions of both passages being arranged in over-lapped spaced relation with respect to each other, a connecting passage extending vfrom the inner portion of one said passage to the inner portion of the other said passage, a valve seat formed in said connecting passage, a. threaded bore formed in the casing and arranged in axial .alinement with said valve seat, a cage open at both ends and having a portion formed with external screw threads for threaded engagement with the threads of said bore, the threaded portion of said cage projecting above the uppersurface of said casing, said cage having a plurality of depending arms extending downwardly in said boretowards-said valve seat, the lower ends of said arrnshaving inwardly extending portions adapted to be disposed in spaced rela tion above said valve seat, a ball mounted within said cage and adapted to be supported by the lower portions of said arms in spaced relation to said valve seat, said ball being freely movable within said cage, a lock nut mounted on the exteriorly disposed portion of said cage and adapted to be engaged tightly with the upper surface of said casing to retain the cage in adjusted position therein, and a cap threadedly mounted on the upper portion of said cage above said lock nut, said cap closing the upper open end of said cage and being removable from said cage to expose the ball for inspection or replacement without affecting the position of said cage within the casing.

EUGENE C. BRISBANE. 

